/* style.css — 函甲科技官网 · 白陶瓷 + 函甲橙 设计系统（浅色主题 v2）
   2026-08-29 v2：按 CEO 反馈从深色改回浅色；配色令牌直接取自 logo 实拍（白陶瓷冷灰 + 函甲橙）
   设计读法：B2G/B2B硬科技官网，受众=政府招商官员/景区采购决策者/制造业厂长，语言=冷静精密可信、干净明亮
   取向：白陶瓷浅灰底 + 函甲橙单色强调，2处大色块作情绪强调，真实 Logo 实体渲染图贯穿全站 */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&family=Noto+Sans+SC:wght@300;400;500;700;900&display=swap');

/* ================= 1. 设计令牌（色值取自 logo-transparent.png 实测采样） ================= */
:root {
    /* 品牌色：取自 logo 内衬橙色，唯一强调色 */
    --brand-color: #FF6A00;
    --brand-dark-orange: #E05300;
    --brand-glow: rgba(255, 106, 0, 0.10);

    /* 中性色阶：取自 logo 影棚背景与陶瓷本色的冷灰调（非暖米色，唯一主题不切换） */
    --bg-page: #F5F7F9;
    --bg-soft: #EBEEF2;
    --surface: #FFFFFF;
    --surface-2: #F1F3F6;
    --border-color: #E1E5EA;
    --border-color-strong: #CBD2DA;

    --text-primary: #1B1F24;
    --text-secondary: #5A6472;
    --text-muted: #8B93A0;

    --radius-sm: 8px;
    --radius-md: 14px;
    --radius-pill: 999px;
    --shadow-card: 0 10px 28px rgba(30, 41, 59, 0.08);
    --transition-timing: cubic-bezier(0.16, 1, 0.3, 1);
}

/* ================= 2. 基础复位 ================= */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    background-color: var(--bg-page);
    color: var(--text-primary);
    font-family: 'Noto Sans SC', 'Inter', -apple-system, sans-serif;
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
}

@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    * { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
}

/* ================= 3. 顶栏导航 ================= */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 72px;
    background-color: rgba(255, 255, 255, 0.86);
    backdrop-filter: blur(16px) saturate(140%);
    -webkit-backdrop-filter: blur(16px) saturate(140%);
    border-bottom: 1px solid var(--border-color);
    z-index: 1000;
    display: flex;
    align-items: center;
}

.nav-container {
    max-width: 1240px;
    width: 100%;
    margin: 0 auto;
    padding: 0 32px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo-link {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
}

.logo-visual-container {
    position: relative;
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.logo-img {
    height: 36px;
    width: auto;
    object-fit: contain;
    position: relative;
    z-index: 2;
}

#fallback-svg-logo {
    position: absolute;
    z-index: 1;
}

.logo-text {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: 0.5px;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 30px;
}

.nav-item {
    text-decoration: none;
    color: var(--text-secondary);
    font-size: 0.92rem;
    font-weight: 500;
    padding: 8px 0;
    position: relative;
    transition: color 0.2s ease;
    white-space: nowrap;
}

.nav-item:hover, .nav-item.active {
    color: var(--text-primary);
}

.nav-item::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--brand-color);
    transition: width 0.3s var(--transition-timing);
}

.nav-item:hover::after, .nav-item.active::after {
    width: 100%;
}

.nav-divider {
    color: var(--border-color-strong);
    user-select: none;
}

.nav-login {
    color: var(--brand-color);
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.nav-login::after {
    display: none !important;
}

.nav-toggle {
    display: none;
    width: 40px;
    height: 40px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    background: transparent;
    color: var(--text-primary);
    font-size: 1.1rem;
    cursor: pointer;
    align-items: center;
    justify-content: center;
}

/* ================= 4. 版面骨架 ================= */
.main-viewport {
    padding-top: 72px;
}

.page-view {
    display: none;
}

.page-view.active {
    display: block;
}

.section-block {
    position: relative;
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: clamp(56px, 9vw, 108px) 30px;
    background-color: var(--bg-page);
    border-bottom: 1px solid var(--border-color);
    overflow: hidden;
}

.section-block:nth-of-type(even) {
    background-color: var(--bg-soft);
}

.sec-home-1 {
    min-height: 88vh;
}

/* 两处强调色块：品牌橙满版，作为叙事节奏的情绪重音（非文本长文时全站仅用两次） */
.sec-home-12,
.sec-ind-6 {
    background: linear-gradient(135deg, var(--brand-color) 0%, var(--brand-dark-orange) 100%);
    border-bottom: none;
}

.sec-home-12 .block-container,
.sec-ind-6 .block-container {
    color: #FFFFFF;
}

.sec-home-12 .slogan-layout h2,
.sec-ind-6 .text-card-panel h3 {
    color: #FFFFFF;
}

.sec-home-12 .slogan-layout p {
    color: rgba(255, 255, 255, 0.88);
}

.sec-home-12 .highlight-orange {
    color: #1B1000;
}

.sec-ind-6 .text-card-panel {
    background-color: rgba(255, 255, 255, 0.14);
    border-color: rgba(255, 255, 255, 0.3);
}

.sec-ind-6 .text-card-panel p {
    color: rgba(255, 255, 255, 0.9);
}

.sec-ind-6 .panel-badge {
    color: #FFFFFF;
    border-color: rgba(255, 255, 255, 0.5);
}

/* 首屏几何纹理：细网格 + logo 品牌光晕，替代库存图 */
.sec-home-1::before {
    content: '';
    position: absolute;
    inset: 0;
    z-index: 0;
    pointer-events: none;
    background-image:
        linear-gradient(rgba(27, 31, 36, 0.035) 1px, transparent 1px),
        linear-gradient(90deg, rgba(27, 31, 36, 0.035) 1px, transparent 1px);
    background-size: 48px 48px;
    mask-image: radial-gradient(ellipse 70% 60% at 50% 30%, black, transparent 75%);
}

.overlay {
    display: none;
}

.block-container {
    position: relative;
    z-index: 2;
    max-width: 1240px;
    width: 100%;
}

/* ================= 5. 滚动淡入 ================= */
.scroll-fade {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.8s var(--transition-timing), transform 0.8s var(--transition-timing);
}

.scroll-fade.scroll-visible {
    opacity: 1;
    transform: translateY(0);
}

/* ================= 6. 标题与文本原语 ================= */
.eyebrow-en,
.serif-title-en {
    font-family: 'Inter', sans-serif;
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    color: var(--brand-color);
    margin-bottom: 18px;
}

.corporate-title {
    font-size: clamp(2.1rem, 4.4vw, 3.4rem);
    font-weight: 700;
    line-height: 1.28;
    letter-spacing: -0.01em;
    color: var(--text-primary);
    margin-bottom: 22px;
}

.highlight-orange {
    color: var(--brand-color);
}

.corporate-desc {
    font-size: 1rem;
    color: var(--text-secondary);
    max-width: 62ch;
    line-height: 1.85;
}

.corporate-desc strong {
    color: var(--text-primary);
    font-weight: 600;
}

.block-title {
    font-size: clamp(1.6rem, 3vw, 2.2rem);
    font-weight: 700;
    color: var(--text-primary);
    text-align: center;
    margin-bottom: 48px;
    line-height: 1.4;
}

.slogan-layout {
    text-align: center;
    max-width: 780px;
    margin: 0 auto;
}

.slogan-layout h2 {
    font-size: clamp(1.5rem, 3vw, 2.1rem);
    font-weight: 700;
    line-height: 1.5;
    color: var(--text-primary);
    margin-bottom: 16px;
}

.slogan-layout p {
    font-size: 1rem;
    color: var(--text-secondary);
    line-height: 1.8;
}

/* ================= 7. Hero 版面（首页主视觉，唯一保留原图带影棚底色） ================= */
.hero-layout {
    display: grid;
    grid-template-columns: 1.05fr 1fr;
    gap: 64px;
    align-items: center;
}

.hero-text-block {
    order: 1;
}

.hero-image-wrapper {
    order: 2;
    position: relative;
}

.hero-logo-showcase {
    position: relative;
    width: 100%;
    aspect-ratio: 4 / 3.4;
    border-radius: var(--radius-md);
    background: linear-gradient(155deg, #FFFFFF 0%, var(--bg-soft) 100%);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-card);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    padding: 6%;
}

.hero-logo-glow {
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse 55% 55% at 50% 42%, var(--brand-glow), transparent 70%);
    animation: glow-breathe 4.5s var(--transition-timing) infinite;
}

@keyframes glow-breathe {
    0%, 100% { opacity: 0.7; }
    50% { opacity: 1; }
}

.hero-logo-img {
    position: relative;
    z-index: 1;
    width: 84%;
    height: auto;
    object-fit: contain;
    filter: drop-shadow(0 18px 26px rgba(30, 41, 59, 0.14));
}

.hero-caption {
    position: absolute;
    left: 20px;
    bottom: 16px;
    z-index: 2;
    font-family: 'Inter', sans-serif;
    font-size: 0.7rem;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--text-muted);
}

@media (prefers-reduced-motion: reduce) {
    .hero-logo-glow { animation: none; }
}

/* 子页头图：用透明 Logo 做大幅淡化水印，呼应品牌又不喧宾夺主 */
.page-hero-watermark {
    position: relative;
}

.page-hero-watermark::after {
    content: '';
    position: absolute;
    right: -40px;
    top: 50%;
    transform: translateY(-50%);
    width: 320px;
    height: 320px;
    background-image: url('./logo-transparent.png');
    background-size: contain;
    background-repeat: no-repeat;
    background-position: center;
    opacity: 0.08;
    pointer-events: none;
    z-index: 0;
}

/* 子页大幅头图（网图占位，深色蒙层+白字，CEO 提供真实素材后替换 background-image） */
.sec-photo-hero {
    min-height: 62vh;
    background-size: cover;
    background-position: center;
    position: relative;
}

.sec-photo-hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, rgba(10, 12, 15, 0.72) 0%, rgba(10, 12, 15, 0.55) 60%, rgba(10, 12, 15, 0.82) 100%);
    z-index: 0;
}

.sec-photo-hero .block-container {
    color: #FFFFFF;
}

.sec-photo-hero .slogan-layout h2 {
    color: #FFFFFF;
}

.sec-photo-hero .slogan-layout p {
    color: rgba(255, 255, 255, 0.88);
}

.sec-photo-hero .eyebrow-en {
    color: #FFC680;
}

/* 卡片配图（网图占位，图片来源标注在 HTML alt，CEO 提供实拍后按 alt 替换 src） */
.domain-card-photo {
    width: 100%;
    aspect-ratio: 16 / 10;
    object-fit: cover;
    border-radius: var(--radius-sm);
    margin-bottom: 18px;
}

/* ================= 8. 内容卡片版面（content-layout） ================= */
.content-layout {
    display: flex;
    justify-content: center;
}

.text-card-panel {
    max-width: 760px;
    background-color: var(--surface);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: clamp(28px, 4vw, 44px);
    box-shadow: var(--shadow-card);
}

.panel-badge {
    display: inline-block;
    font-family: 'Inter', sans-serif;
    font-size: 0.72rem;
    font-weight: 600;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--brand-color);
    padding: 5px 12px;
    border: 1px solid rgba(255, 106, 0, 0.3);
    border-radius: var(--radius-pill);
    margin-bottom: 18px;
}

.panel-badge.orange {
    background-color: rgba(255, 106, 0, 0.08);
}

.text-card-panel h3 {
    font-size: clamp(1.3rem, 2.4vw, 1.7rem);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 16px;
    line-height: 1.4;
}

.text-card-panel p {
    color: var(--text-secondary);
    font-size: 0.98rem;
    line-height: 1.85;
}

/* ================= 9. 三大业务网格（domain-grid，带图标） ================= */
.domain-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 24px;
}

.domain-card {
    background-color: var(--surface);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 32px 28px;
    box-shadow: var(--shadow-card);
    transition: border-color 0.25s ease, transform 0.25s ease, box-shadow 0.25s ease;
    cursor: default;
}

.domain-card[onclick] {
    cursor: pointer;
}

.domain-card:hover {
    border-color: rgba(255, 106, 0, 0.4);
    transform: translateY(-4px);
    box-shadow: 0 16px 36px rgba(30, 41, 59, 0.12);
}

.domain-card-icon {
    width: 44px;
    height: 44px;
    border-radius: var(--radius-sm);
    background-color: rgba(255, 106, 0, 0.1);
    color: var(--brand-color);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    margin-bottom: 18px;
}

.card-num-label {
    font-family: 'Inter', sans-serif;
    font-size: 0.72rem;
    font-weight: 600;
    letter-spacing: 0.12em;
    color: var(--text-muted);
    margin-bottom: 14px;
}

.domain-card h3 {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 12px;
}

.card-underline {
    width: 36px;
    height: 3px;
    background-color: var(--brand-color);
    border-radius: 2px;
    margin-bottom: 14px;
}

.domain-card p {
    color: var(--text-secondary);
    font-size: 0.92rem;
    line-height: 1.75;
}

/* ================= 10. 关于函人（about-split，真实 Logo 呼应品牌起源） ================= */
.about-split {
    display: grid;
    grid-template-columns: 0.85fr 1.15fr;
    gap: 64px;
    align-items: center;
}

.about-orn {
    display: flex;
    justify-content: center;
}

.about-logo-img {
    width: 82%;
    max-width: 300px;
    height: auto;
    filter: drop-shadow(0 20px 32px rgba(30, 41, 59, 0.14));
}

.about-txt h2 {
    font-size: clamp(1.6rem, 3vw, 2.2rem);
    font-weight: 700;
    line-height: 1.45;
    margin: 16px 0 18px;
}

.about-txt .lead {
    font-size: 1.05rem;
    color: var(--text-primary);
    font-weight: 500;
    margin-bottom: 14px;
    line-height: 1.8;
}

.about-txt p {
    color: var(--text-secondary);
    font-size: 0.96rem;
    line-height: 1.85;
}

/* ================= 11. 版块居中标题（sec-head-center，通用） ================= */
.sec-head-center {
    text-align: center;
    margin-bottom: 48px;
}

.sec-head-center .eyebrow-en {
    margin-bottom: 12px;
}

.sec-head-center .block-title {
    margin-bottom: 12px;
}

.sec-head-sub {
    color: var(--text-secondary);
    font-size: 0.95rem;
    max-width: 620px;
    margin: 0 auto;
    line-height: 1.7;
}

/* ================= 12. 一条主轴（axis-line 三节点流程） ================= */
.axis-line {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 36px;
    position: relative;
}

.axis-line::before {
    content: '';
    position: absolute;
    top: 34px;
    left: 16.6%;
    right: 16.6%;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--border-color-strong) 15%, var(--border-color-strong) 85%, transparent);
}

.axis-node {
    text-align: center;
    position: relative;
}

.axis-ic {
    width: 68px;
    height: 68px;
    margin: 0 auto 20px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--brand-color);
    font-size: 1.4rem;
    background-color: var(--surface);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-card);
    position: relative;
    z-index: 1;
}

.axis-node h3 {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 10px;
}

.axis-node p {
    color: var(--text-secondary);
    font-size: 0.88rem;
    line-height: 1.7;
}

/* domain-card 底部行动链接（取代原按钮，更轻量） */
.card-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    margin-top: 16px;
    color: var(--brand-color);
    font-size: 0.86rem;
    font-weight: 600;
}

/* ================= 13. 蜂巢协同流程（hive-flow，四步紧凑网格） ================= */
.hive-flow {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

.hf {
    text-align: center;
    background-color: var(--surface);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 28px 18px;
    box-shadow: var(--shadow-card);
}

.hf i {
    display: block;
    color: var(--brand-color);
    font-size: 1.3rem;
    margin-bottom: 12px;
}

.hf b {
    display: block;
    font-family: 'Inter', sans-serif;
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--text-muted);
    margin-bottom: 8px;
}

.hf span {
    display: block;
    font-size: 0.92rem;
    font-weight: 600;
    color: var(--text-primary);
}

.hf small {
    display: block;
    font-size: 0.78rem;
    color: var(--text-muted);
    margin-top: 6px;
}

/* ================= 12. 数据看板（stats-grid） ================= */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 24px;
}

.stat-card {
    text-align: center;
    padding: 32px 20px;
    background-color: var(--surface);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-card);
}

.stat-number {
    font-family: 'Inter', sans-serif;
    font-size: clamp(2.2rem, 4vw, 3rem);
    font-weight: 700;
    color: var(--brand-color);
    line-height: 1.1;
    margin-bottom: 10px;
}

.stat-unit {
    font-size: 1.1rem;
    font-weight: 600;
    margin-left: 2px;
}

.stat-label {
    color: var(--text-secondary);
    font-size: 0.88rem;
    line-height: 1.6;
}

/* ================= 13. 时间轴（timeline） ================= */
.timeline-container {
    position: relative;
    padding-left: 28px;
    border-left: 1px solid var(--border-color);
}

.timeline-row {
    position: relative;
    display: flex;
    flex-wrap: wrap;
    gap: 4px 16px;
    padding: 0 0 28px 20px;
}

.timeline-row:last-child {
    padding-bottom: 0;
}

.timeline-row::before {
    content: '';
    position: absolute;
    left: -33px;
    top: 4px;
    width: 9px;
    height: 9px;
    border-radius: 50%;
    background-color: var(--brand-color);
    box-shadow: 0 0 0 4px var(--bg-page);
}

.timeline-year {
    font-family: 'Inter', sans-serif;
    font-weight: 700;
    color: var(--text-primary);
    font-size: 0.92rem;
    flex-shrink: 0;
    min-width: 84px;
}

.timeline-text {
    color: var(--text-secondary);
    font-size: 0.92rem;
    line-height: 1.7;
}

/* ================= 14. 技术规格表格（tech-spec-table） ================= */
.tech-spec-table {
    width: 100%;
    border-collapse: collapse;
    background-color: var(--surface);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-card);
}

.tech-spec-table thead th {
    font-family: 'Inter', sans-serif;
    font-size: 0.74rem;
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--brand-dark-orange);
    background-color: var(--bg-soft);
    text-align: left;
    padding: 14px 20px;
    border-bottom: 1px solid var(--border-color);
}

.tech-spec-table tbody td {
    padding: 16px 20px;
    font-size: 0.9rem;
    color: var(--text-secondary);
    border-bottom: 1px solid var(--border-color);
}

.tech-spec-table tbody tr:last-child td {
    border-bottom: none;
}

.tech-spec-table tbody td strong {
    color: var(--text-primary);
}

/* ================= 15. 联系与登录 ================= */
.domain-main-title {
    font-size: clamp(1.8rem, 3.4vw, 2.4rem);
    font-weight: 700;
    text-align: center;
    color: var(--text-primary) !important;
    margin-bottom: 10px;
}

.domain-subtitle-en {
    font-family: 'Inter', sans-serif;
    text-align: center;
    font-size: 0.8rem;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--text-muted) !important;
    margin-bottom: 16px;
}

.title-bottom-bar {
    width: 60px;
    height: 3px;
    background-color: var(--brand-color);
    margin: 0 auto 48px auto;
    border-radius: 2px;
}

.contact-layout {
    display: grid;
    grid-template-columns: 0.9fr 1.1fr;
    gap: 32px;
    align-items: stretch;
}

.glass-card {
    background-color: var(--surface);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: clamp(28px, 4vw, 40px);
    box-shadow: var(--shadow-card);
}

.contact-info h3 {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 16px;
}

.contact-info p {
    color: var(--text-secondary);
    font-size: 0.94rem;
    line-height: 1.8;
    margin-bottom: 28px;
}

.info-item {
    display: flex;
    align-items: center;
    gap: 12px;
    color: var(--text-primary);
    font-size: 0.94rem;
    padding: 12px 0;
    border-top: 1px solid var(--border-color);
}

.info-item i {
    color: var(--brand-color);
    width: 18px;
}

.form-group,
.login-form-group {
    margin-bottom: 20px;
}

.form-group label,
.login-form-group label {
    display: block;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 8px;
}

.form-group input,
.form-group select,
.login-form-group input {
    width: 100%;
    padding: 12px 14px;
    border: 1px solid var(--border-color-strong);
    border-radius: var(--radius-sm);
    font-family: inherit;
    font-size: 0.92rem;
    background-color: var(--bg-soft);
    color: var(--text-primary);
}

.form-group input::placeholder,
.login-form-group input::placeholder {
    color: var(--text-muted);
}

.form-group input:focus,
.form-group select:focus,
.login-form-group input:focus {
    outline: none;
    border-color: var(--brand-color);
    background-color: var(--surface);
    box-shadow: 0 0 0 3px rgba(255, 106, 0, 0.14);
}

.login-wrapper-card {
    background-color: var(--surface);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: clamp(32px, 5vw, 44px);
    box-shadow: var(--shadow-card);
}

.login-wrapper-card h3 {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 6px;
}

.login-subtext {
    font-family: 'Inter', sans-serif;
    font-size: 0.72rem;
    letter-spacing: 0.12em;
    color: var(--text-muted);
    margin-bottom: 28px;
}

.system-tag-alert {
    display: block;
    font-size: 0.78rem;
    color: var(--text-muted);
    text-align: center;
    margin-top: 16px;
}

/* ================= 16. 按钮 ================= */
.btn-corp {
    width: 100%;
    padding: 13px;
    background-color: var(--brand-color);
    border: none;
    border-radius: var(--radius-pill);
    color: #FFFFFF;
    font-size: 0.95rem;
    font-weight: 700;
    cursor: pointer;
    transition: background-color 0.2s ease, transform 0.15s ease;
}

.btn-corp:hover {
    background-color: var(--brand-dark-orange);
}

.btn-corp:active {
    transform: scale(0.98);
}

/* ================= 17. 页脚（浅色，Logo 用透明版） ================= */
.footer-corporate {
    background-color: var(--bg-soft);
    border-top: 1px solid var(--border-color);
    padding: 44px 0;
    color: var(--text-muted);
}

.footer-container {
    max-width: 1240px;
    margin: 0 auto;
    padding: 0 32px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 24px;
}

.footer-logo-box {
    display: flex;
    align-items: center;
}

.footer-logo-img {
    height: 42px;
    width: auto;
    object-fit: contain;
}

.footer-logo-svg {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo-text-vertical {
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.logo-text-main {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: 0.5px;
    line-height: 1.2;
}

.logo-text-sub {
    font-size: 0.72rem;
    color: var(--text-muted);
    letter-spacing: 0.5px;
}

.footer-right {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: 12px;
}

.footer-row {
    display: flex;
    align-items: center;
    gap: 20px;
    font-size: 0.85rem;
    flex-wrap: wrap;
}

.footer-nav a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color 0.2s ease;
}

.footer-nav a:hover {
    color: var(--brand-color);
}

.footer-service-item {
    color: var(--text-primary);
    font-weight: 600;
    background-color: var(--surface);
    border: 1px solid var(--border-color);
    padding: 4px 12px;
    border-radius: var(--radius-pill);
    font-size: 0.8rem;
}

.footer-copyright {
    color: var(--text-muted);
    font-size: 0.8rem;
}

/* ================= 17.5 图文穿插组件（v6：media-split / photo-strip / section-banner / photo-band） ================= */
.media-split {
    display: grid;
    grid-template-columns: 1fr 1.05fr;
    gap: 56px;
    align-items: center;
}

.media-split-img {
    width: 100%;
    aspect-ratio: 4 / 3;
    object-fit: cover;
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-card);
    display: block;
}

.media-split.rev .media-split-img {
    order: 2;
}

.media-split.rev .media-split-txt {
    order: 1;
}

.media-split-txt h3 {
    font-size: clamp(1.3rem, 2.4vw, 1.7rem);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 16px;
    line-height: 1.4;
}

.media-split-txt p {
    color: var(--text-secondary);
    font-size: 0.98rem;
    line-height: 1.85;
}

.photo-strip {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

.photo-strip.cols-3 {
    grid-template-columns: repeat(3, 1fr);
}

.photo-strip figure {
    margin: 0;
    background-color: var(--surface);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-card);
}

.photo-strip img {
    width: 100%;
    aspect-ratio: 4 / 3;
    object-fit: cover;
    display: block;
}

.photo-strip figcaption {
    padding: 12px 16px;
    font-size: 0.84rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

.section-banner-photo {
    width: 100%;
    aspect-ratio: 21 / 7;
    object-fit: cover;
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-card);
    margin-top: 40px;
    display: block;
}

/* 结尾标语带用大幅背景图（与 sec-photo-hero 共用蒙层样式，仅更矮） */
.sec-photo-band {
    min-height: 44vh;
}

/* ================= 18. 响应式（仅一份，覆盖全站） ================= */
@media (max-width: 968px) {
    .nav-menu {
        position: fixed;
        top: 72px;
        left: 0;
        width: 100%;
        background-color: var(--surface);
        border-bottom: 1px solid var(--border-color);
        flex-direction: column;
        align-items: flex-start;
        gap: 4px;
        padding: 16px 32px 24px;
        display: none;
    }

    .nav-menu.open {
        display: flex;
    }

    .nav-item {
        width: 100%;
        padding: 12px 0;
        border-bottom: 1px solid var(--border-color);
    }

    .nav-divider {
        display: none;
    }

    .nav-toggle {
        display: flex;
    }

    .hero-layout {
        grid-template-columns: 1fr;
        gap: 36px;
    }

    .hero-image-wrapper {
        order: 1;
    }

    .hero-text-block {
        order: 2;
    }

    .domain-grid,
    .stats-grid,
    .contact-layout,
    .about-split {
        grid-template-columns: 1fr;
    }

    .axis-line {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .media-split {
        grid-template-columns: 1fr;
        gap: 32px;
    }

    .media-split.rev .media-split-img {
        order: 0;
    }

    .media-split.rev .media-split-txt {
        order: 1;
    }

    .photo-strip,
    .photo-strip.cols-3 {
        grid-template-columns: 1fr 1fr;
    }

    .axis-line::before {
        display: none;
    }

    .hive-flow {
        grid-template-columns: 1fr 1fr;
    }

    .about-orn {
        order: -1;
    }

    .page-hero-watermark::after {
        display: none;
    }

    .footer-container {
        flex-direction: column;
        align-items: flex-start;
    }

    .footer-right {
        align-items: flex-start;
    }
}

@media (max-width: 560px) {
    .nav-container {
        padding: 0 20px;
    }

    .section-block {
        padding: 48px 20px;
    }

    .logo-text {
        display: none;
    }

    .photo-strip,
    .photo-strip.cols-3 {
        grid-template-columns: 1fr;
    }
}